19 November 1998 Progress in replication of substrates for multilayer coatings
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Abstract
Studies are being carried out to compare the performance of several different separation materials used in the replication process. This report presents the results obtained during the second year of a program which consists of replicating smooth, thin substrates, depositing multilayer coatings upon them, and evaluating their performance. Replication smooth, thin substrates, depositing multilayer coatings upon them, and evaluating their performance. Replication and multilayer coatings are both critically important to the development of focussing hard x- ray telescopes that function up to 100 keV. The activities of the current year include extending the comparison between sputtered amorphous carbon and evaporated gold to include sputtered as well as evaporated gold. The figure of merit being the smoothness of the replica which has a direct effect on the specular reflectivity. These results were obtained with epoxy replication, but they should be applicable to electroformed nickel, the process we expect to use for the ultimate replicated optics.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Suzanne E. Romaine, John E. Everett, Ricardo J. Bruni, Adrian Ivan, Paul Gorenstein, Mauro Ghigo, Francesco Mazzoleni, Oberto Citterio, Joseph Pedulla, "Progress in replication of substrates for multilayer coatings", Proc. SPIE 3444, X-Ray Optics, Instruments, and Missions, (19 November 1998); doi: 10.1117/12.331277; http://dx.doi.org/10.1117/12.331277
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KEYWORDS
Gold

Carbon

Multilayers

Data modeling

Reflectivity

Atomic force microscopy

Interfaces

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